Panel Efficiency Variation With Temperature
- Did you know that even the most efficient solar panels will be affected by rise in temperature
- The temperatures developed within panels will be much higher than the outside temperatures, resulting in decrease from stipulated efficiencies
- Input your panel efficiency and the temperature in your region
- Based on it, we will calculate the actual efficiency that will be reached by your panels
Panel Efficiency Variation With Temperature
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[insert_php]
$message=””;
echo $message;
if((isset($_POST[‘panel_efficiency’]))&&(isset($_POST[‘temperature’]))) {
if((!empty($_POST[‘panel_efficiency’]))&&($_POST[‘temperature’])) {
$servername = ‘localhost’;
$username = ‘solarman_cal’;
$password = ‘mv)f848R4h~&’;
$dbname = ‘solarman_tools’;
// Create connection
$conn = mysql_connect($servername, $username, $password) or die(“Unable to connect to MySQL”);
mysql_select_db($dbname, $conn );
$I1 = $_POST[“panel_efficiency”];
$I2 = $_POST[“temperature”];
$I3 = $I2 + 20;
$ip = $_SERVER[‘REMOTE_ADDR’];
$date= date(‘Y-m-d’);
$sql = “INSERT INTO `efficiency_temp` (`panel_efficiency`, `temperature`, `date`, `ip`) VALUES (‘$I1′,’$I2′,’$date’, ‘$ip’)”;
if (mysql_query($sql) === TRUE) {
} else {
echo “Error: ” .mysql_error() . “
“;
}
mysql_close($conn);
$answer=($I1-((($I3-25)*0.45*$I1)/100));
echo “
Calculated panel efficiency
|
Panel efficiency at STC (25 oC): |
$I1 % |
|
Usual temperature in your region : |
$I2 oC |
Panel efficiency at given temperature ($I2 oC): $answer %
- Calculation assumes a temperature coefficient of -0.45%/oC. Please check the manufacturer’s datasheet for actual thermal coefficient.
- Panel temperature developed will be usually 20 oC above ambient temperature.
“;
}
else{
echo “
“;
}
}
[/insert_php]
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